import matplotlib.pyplot as plt
import numpy as np

# plt.bar([0,1,2,3],[5,6,7,8])


# data = [32,21,41,100]
# label = ['Jan', 'Feb', 'Mar', 'Apr']
# plt.bar(np.arange(len(data)),data, width=0.3, align='edge')
# plt.xticks(np.arange(len(data)), labels=label)

plt.pie([10,20,30,40], labels=['a','b','c','d'], autopct='%.2f%%', explode=[0,0,0.05,0])
plt.axis('equal')


plt.show()
